App Overview

aprs.fi icon

aprs.fi

GainIO · Navigation

An additional in-app subscription is needed for some features, so please read this application description fully before purchasing.

$6.99 · In-app purchases

PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
1,152 ratings · Top 15%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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Combine features and design from your favorite apps.

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What's included18 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for aprs.fi: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Create a clean, minimalist UI that prioritizes essential features.

Assumption to check: Users find navigation apps cluttered with too many options

Validate with people who use this workflow before building.

Hypothesis 2

Implement a more reliable data source for real-time updates.

Assumption to check: Real-time data can be inaccurate or delayed

Validate with people who use this workflow before building.

Hypothesis 3

Offer clear explanations of subscription benefits and features.

Assumption to check: Subscription models can be confusing

Validate with people who use this workflow before building.

Hypothesis 4

Enhance offline maps and navigation capabilities.

Assumption to check: Offline functionality is limited in many apps

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

An additional in-app subscription is needed for some features, so please read this application description fully before purchasing. Navigate to addresses with clear step-by-step instructions. Obtain immediate, real-time access to current APRS position information, weather reports, telemetry graphs, and more. Zoom and browse around the world and see stations immediately – no waiting. • Route guidance / driving directions • Search callsigns and addresses, with quick search-as-you-type and search history features • Track multiple stations at the same time • Filter information shown on the map (weather stations, AIS, custom filters) • View weather, telemetry and statistic graphs • Beacon your position on aprs.fi • Attach to a transceiver with a wireless connection to a BLE TNC, receive and transmit position beacons without the Internet • Runs directly on top of the reliable and fast aprs.fi database • Tested to work great on all currently-supported iPhone and iPad models • Supports iOS 14/15/16/17/18/26 • Dark Mode support for an ergonomic viewing experience in low-light environments • High-resolution graphics for Retina and Retina HD displays with full APRS symbol set Buy the app – get the web site for free! Some new features require a subscription. All old and some new features will be available without a subscription fee. These features are currently included in the Extra Features subscription package: • APRS text messaging with a modern instant messenger-like experience, supports international text and emojis • High-performance software DSP modem • APRS-IS beaconing, with up to 10 callsign profiles • Offline maps • RX iGate functionality • Long time ranges in map and graph views Note: Continued use of GPS running in the background can dramatically decrease battery life. GPS is not required for viewing APRS information. Terms of service: https://aprs.fi/page/app_terms Privacy policy: https://aprs.fi/page/app_privacy

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
@react-navigation/native
react-native-maps
axios
@react-native-community/geolocation
BUILD KIT DIFFICULTY
Advanced

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.